Assembleable artificial bone plate and artificial bone plate unit

Abstract

An artificial bone plate unit and an assembleable artificial bone plate are provided. The artificial bone plate unit includes a plate body, multiple connecting pins, connecting holes, drug cavities, and drug-releasing openings. The plate body has two main surfaces and a peripheral surface connected between the two main surfaces. The connecting pins and the connecting holes are formed on the plate body and arranged along the peripheral surface on the plate body. The connecting holes correspond in shape to the connecting pins. The drug cavities are formed in the artificial bone plate unit and are connected to the drug-releasing openings. The artificial bone plate units are connected using the connecting pins and the connecting holes to form the assembleable artificial bone plate. The assembleable artificial bone plate can be bent into the shape of a defect area of the skull, which saves material and time.

What is claimed is: 
     
         1 . An artificial bone plate unit comprising:
 a plate body having
 two main surfaces; 
 a peripheral surface connected between the two main surfaces; 
   multiple connecting pins formed on the plate body and arranged along the peripheral surface on the plate body;   multiple connecting holes formed in the plate body and arranged along the peripheral surface in the plate body; the connecting holes corresponding in shape to the connecting pins;   multiple drug cavities formed in the artificial bone plate unit; and   multiple drug-releasing openings formed on the artificial bone plate unit; each of the drug-releasing openings connected to a respective one of the drug cavities.   
     
     
         2 . The artificial bone plate unit as claimed in  claim 1 , wherein:
 a maximum area of a cross section of each of the drug cavities is greater than an area of a corresponding one of the drug-releasing openings; and   a normal direction of the cross section of each of the drug cavities is parallel to an opening direction of the corresponding drug-releasing opening.   
     
     
         3 . The artificial bone plate unit as claimed in  claim 1 , comprising multiple drug-releasing channels; each of the drug-releasing channels connecting a respective one of the drug-releasing openings and a respective one of the drug cavities. 
     
     
         4 . The artificial bone plate unit as claimed in  claim 1 , wherein:
 a shape of a longitudinal section of each of the drug cavities is a circle, an ellipse, an ovoid, or a triangle; and   a normal direction of the longitudinal section of each of the drug cavities is perpendicular to an opening direction of the corresponding drug-releasing opening.   
     
     
         5 . The artificial bone plate unit as claimed in  claim 1 , wherein:
 an area of a cross section of each of the drug cavities increases as a cutting plane of the cross section moves away from the corresponding drug-releasing opening; and   a normal direction of the cross section of each of the drug cavities is parallel to an opening direction of the corresponding drug-releasing opening.   
     
     
         6 . The artificial bone plate unit as claimed in  claim 1 , wherein the connecting pins and the connecting holes are located on the peripheral surface of the plate body. 
     
     
         7 . The artificial bone plate unit as claimed in  claim 6 , wherein
 the plate body is an N-sided polygon such that the peripheral surface comprises N connecting faces;   a number of the connecting pins is N, and each of the connecting pins is formed on a respective one of the N connecting faces;   a number of the connecting holes is N, and each of the connecting holes is formed in a respective one of the N connecting faces;   wherein N is an integer greater than two.   
     
     
         8 . The artificial bone plate unit as claimed in  claim 1 , wherein
 the connecting pins are formed on one of the two main surfaces;   the connecting holes are formed through the two main surfaces.   
     
     
         9 . The artificial bone plate unit as claimed in  claim 1 , wherein
 the connecting pins are formed on the two main surfaces;   the connecting holes are formed through the two main surfaces.   
     
     
         10 . The artificial bone plate unit as claimed in  claim 8 , wherein multiple screw holes are formed through the two main surfaces and are arranged along the peripheral surface. 
     
     
         11 . The artificial bone plate unit as claimed in  claim 1 , wherein the plate body is polygonal, such that the peripheral surface comprises multiple corner portions; each of the connecting pins is disposed adjacent to one of the corner portions; each of the connecting holes is disposed adjacent to one of the corner portions. 
     
     
         12 . The artificial bone plate unit as claimed in  claim 1 , wherein the plate body is an N-sided polygon, such that the peripheral surface comprises N connecting faces; a sum of a number of the connecting pins and a number of the connecting holes is N; N is an integer greater than 2. 
     
     
         13 . The artificial bone plate unit as claimed in  claim 8 , wherein a thickness of the plate body is less than 1 mm. 
     
     
         14 . The artificial bone plate unit as claimed in  claim 1 , wherein the artificial bone plate unit is made of titanium, Ti-6Al-4V, 316L stainless steel, polyether ether ketone, or aluminum. 
     
     
         15 . The artificial bone plate unit as claimed in  claim 1 , wherein multiple drug pins formed on one of the main surfaces of the plate body; each of the drug pins has
 one of the drug cavities formed in the drug pin;   one of the drug-releasing openings formed on a distal end of the drug pin and connected to the corresponding drug cavity.   
     
     
         16 . An assembleable artificial bone plate being bendable and comprising multiple said artificial bone plate units as claimed in  claim 1 ; the artificial bone plate units connected to each other; among any two of the artificial bone plate units that are connected to each other, at least one of the connecting pins on one of said two artificial bone plate units mounted inside a respective one of the connecting holes in the other one of said two artificial bone plate units. 
     
     
         17 . An artificial bone plate unit comprising:
 a plate body having
 two main surfaces; 
 a peripheral surface connected between the two main surfaces; 
   multiple connecting pins formed on the plate body and arranged along the peripheral surface on the plate body; and   multiple drug cavities formed in the artificial bone plate unit; and   multiple drug-releasing openings formed on the artificial bone plate unit; each of the drug-releasing openings connected to a respective one of the drug cavities.   
     
     
         18 . An artificial bone plate unit comprising:
 a plate body having
 two main surfaces; 
 a peripheral surface connected between the two main surfaces; 
   multiple connecting holes formed in the plate body and arranged along the peripheral surface in the plate body; and   multiple drug cavities formed in the artificial bone plate unit; and   multiple drug-releasing openings formed on the artificial bone plate unit; each of the drug-releasing openings connected to a respective one of the drug cavities.